1) Change detection explained
https://blog.thoughtram.io/angular/2016/02/22/angular-2-change-detection-explained.html
2) Getting started at Angular Universal
https://davidea.st/articles/the-beginners-guide-to-angular-universal
3) Architecture in Angular Project
https://medium.com/@cyrilletuzi/architecture-in-angular-projects-242606567e40
4) Everything you need to know about the `ExpressionChangedAfterItHasBeenCheckedError` error
https://blog.angularindepth.com/everything-you-need-to-know-about-the-expressionchangedafterithasbeencheckederror-error-e3fd9ce7dbb4